Enhance voice reply processing to include a friendly tone in prompts; fix minor logging issue in worker function.

app.py

@@ -131,7 +131,7 @@ def worker():
             elif task["type"] == "audio":
                 _fn_voice_reply(task["message_id"],
                                 task["chat_id"],
-                                task["prompt"])
+                                task['prompt'])
         except Exception as e:
             logging.error(f"Worker error {task}: {e}")
         finally:
@@ -273,7 +273,8 @@ def _fn_generate_images(message_id, chat_id, prompt, count=1):
                                 f"😢 Failed to generate image {i}/{count}.")
 
 def _fn_voice_reply(message_id, chat_id, prompt):
-    result = generate_voice_reply(prompt,
+    processed_prompt = f"Say this dialog in a friendly tone:\n\n{prompt}"
+    result = generate_voice_reply(processed_prompt,
                                   model="openai-audio",
                                   voice="coral",
                                   audio_dir=BotConfig.AUDIO_DIR)